Separating device for resawing machines



Oct. 5 1926. 1,602,040

' J. A. NEAL SEPARATING DEVICE FOR RESAWING MACHINES Filed March 5, 1925 Patented Oct. 1926.

iiiiir stares PATENT OFFLQE-..

rosnrn A. NEAL, or COMPANY,

MOBILE, ALABAMA, ASSIGN-OR OF O'NETHAIQE TOISTOVLERi LUMBER. CE MOBILE, ALELBAMA, A COREOEt-AHIQN, OF ALABAMA.

SEPABA'IING- DEVICE EOR.RES.AVHQNG. MACHINES Applieation filed March 5,

This invention relates to resawing machines, and more particularly to means employed for separating or the pieces of stool; cut by the saws, prevent the same from exerting a spreading apart so as to binding action on the saws in operating such machines.

The main ob ect of the invention is to improve the con efficiency of ticularly the separating device .show Patent No. 1,435,252

struction and increase the devices of the character referred to as heretofore constructed, and par- 11 in my granted November 14,.

1922, specially designed and adapted for use with a sawing machine in which the saws are mounted on a tilting frame, together with means for supporting and guiding the material through the machine into position. for i the frame is the stock ona the action, of the saws, when tilted to adapt the saws to cut bevel, as shown, for example,

in my application of even date herewith,

which has since resulted in Patent No. 1,58%,796 dated May .18, 1926. Other obiects will readily appear from the following description.

The invention will first be hereinafter more particularly described, with reference to the accompanying drawings, which are to be t1 11 as a part of, this specification, and then pointed out in the claims at the end of the description.

in said drawings, Fig. 1 is a vertical sectional view taken on the line 11 of Fig.

2, illustrating the separating devices and associated means for supporting and guiding the material into position for the action of the saws Fig. 2 isa plan view partly broken away,

illustrating a resawing machine embodying the saws being mounted on a the angle of the saws my invention; tilting frame whereby may be changed to adapt them to stock on a bevel or at an angle to Zontal plane; and

Fig. 3 is a detail. sectional View 0 cut the a horif one of the separating devices and its supporting bracket detached; the bracket being partly drawings, in w hich the used to denote ews, the

be of the form shown, or As shown it and end 1925. Serial no. 13,293,.

or side portions A and A secured together at the four cornersof the box-like structure by suitable fastening bolt-s; vertical recesses or gapsbeing formed in said sides 2& and A about midway thereof, to provide suitable guideways for the head end portions 7) of" a. tilting frame B on which aremounted circular saws C; said tilting frame being secured intermediate its ends upon across-beam D having trunnioned e5, ends fitted in suitable bearings in the front and rear sides A and A so as to permit arockingmovement of the tilting frame forchanging the angle-of the saws. Guide bars- E and E aresecured on the main frame be,- tween which the. material or stock to-be operated on by the saws passes into position. for the, action of the saws as the material is passed through, the machine;- said guide hate being formed or provided on the outer 75. sidesthereof with laterally projecting base flanges e and e havingoblong slot-s therein tojizeceive fastening bolts. or screws 6 and 6 for adjusting and securing said guide bars at difierent distances apart to accom- 89- modate material or stock of'different widths. The guide bars E1 and E have, elongated slots ,or openings ,6 and 6 formed therein. through whi'chthe separating devices F and.

1 protrude into positionto enter the kerf 85. and. spread apart the. pieces of stock out by the saws so as to provide sufficient clearance topreventbinding action on the saws.

A bed plate or. guide box bottom G offchannel iron. or inverted trough-like form is 90. placed between. the guide bars on: whichthe material is supported. in its passage through. the machine; said bed plate being prefer,- ably provided withmeans, (not shown) for securing it in different positions to accom- 95. modate stock. of different t-l'iicknesses, for which purpose-any suitable means may be em.- ployed, such. means forming no part ofv the inventionv claimed. herein. The slots 6? and. e in opposite sides of the guide bars are 100. wider on the outer side, than on, the inner side thereof. to permit the separating devices F andF to beshifted into inclinedfpositions by adjnstingthe tilting frame, and they areof sufficient length to receive said 10,5, devices, whichv are located .rearwardly of the saws and adapted to be yieldinglfy forced. into the kerf sufficiently to. hold apart the pieces of: material divided by the saws and prevent binding action. thereof 11p,

upon the saws. The separating devices, as shown, are substantially simitar-shaped edge-tools having enlarged and round shanks which are slidably fitted in tubular portions or housings It provided therefor on the upper ends of supporting brackets H attached to opposite sides of the cross-beam D; said brackets being of angular form each having an intermediate horizontally dis posed body portion 7L supporting at one end and preferably integral with an upright member if, which terminates in the tube or housing it, and at the other end a depending end portion or flange if having a slot or holes therethrough to receive a fastening bolt or bolts I for securing the respective brackets to opposite sides of said cross beam so as to permit vertical adjustment of the bracket, said bolts having lock nuts thereon, as shown. for securing the parts together. The fastening bolts 1 are passed through oblong holes or slots in the cross-beam D as indicated in dotted lines in Fig. 2 to adapt the brackets to be adjusted longitudinally of the machine frame and secured in different positions, either nearer to or further from the cutting edge of the saws, as may be desired in sawing different kinds of stock. The separating devices are arranged at an angle of about to a line passing horizontally through the machine, parallel with the guide bars with the edge tools having their curved edges extending at an acute angle to the stock in its passage through the machine and having the pointet ends thereof turned so as to adapt them to readily enter the kerf under pressure of the spring, this action being facilitated by the peculiar form of the tool, as shown. The tubular housing It of the supporting bracket is formed or provided with an arm which extends rearwardly in the direction of the axis of the tube and terminates in a bent end portion or flange 72, which is apertured in alinement wits said axis to receive a slidable rod or bolt K, the forward end of which is secured in a recess or socket in the rear end of the enlarged shank of the edge-tool so as to adapt the two parts to move back and forth in unison. The aperturcd flange If forms an abutment for one end of a spring L placed on the rod K between s'aid abutment and a nut or nuts 71: on said screw for varying the tension of the spring to adapt it to exert greater or less force in driving the edge-tool into the kerf made by the saws. The rod K has a nut or nuts 76 screwed thereon abutting against the outer side of the apertured flange If so as to limit the forward movement of the separating device beyond a predetermined point, and the rod and edge-tool are prevented from turning by means of a set screw M screwed into a threaded hole in the top of the housing 'h and having a reduced endportion at fitting in groove in the shank of the edge-tool. The lock nuts on the rbds K hold them in relatively fixed positions after adjustment to vary the tension of the spring or limit the movement of the separating devices. in adjusting chock or washer N is placed between the crossbeam and the foot of the edge-tool-supporting-bracket and may be used interchangeably with washers of different thicknesses to adapt the support ing brackets to be adjusted and secured at dinerent distances apart, according to the distance between the guide-bars in sawing material of diti'erent widths.

The separating devices constructed asdescribed are simple and inexpensive in manufacture and durable and etlicient in practical use, and they are not liable to get out of order, and when any part thereof becomes worn or broken it may be easily and quickly removed and replaced. Furthermore, they may be easily and quickly adjusted vertically and also laterally, to vary the distance therebetween and may also be adjusted longitudinally, to vary the distance between them and the saws. They are also adapted to be thrown into an inclined position toward either the right or the left hand side of the machine, to accommodate themselves to the various angular adjustments of the saws provided by the tilting frame.

laving thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States:

1. In a sawing machine, means for seprating and holding in slightly separated elation the pieces of stock divided by the aws; said means comprising a pair of lonitudinally slidable rods arranged on oppote sides of the path of movement of the eel; at an angle thereto; each rod having a substantially simitar-shaped edgetool fined on its forward end and protruding through a slot in an adjacent guide-bar; said tool having its curved edge arranged transversely of said red at an acute angle to the stock with its pointed end in position to adapt it to easily enter the kerf made by the saws, and means for yieldingly forcing the tool into the kerf.

2. The combination, in a sawing machine, of means for supporting and guiding material through the machine in position to be acted upon by the saws and means for separating and holding in slightly separated relation the pieces of stock divided by the saws; said means comprising a pair of longitudinally slidable rods arranged on opposite sides of the path of movement of the stock at an angle thereto; each rod having a substantially simitar-shaped edge-tool fixed on its forward end and protruding through a slot in an adjacent guide-bar; said tool having its curved edge arranged o to Us to H transversely of said rod at an acute angle to the stock with its pointed end in position to adapt it to easily enter the kerf made by the tool into the kerf, and means for varying the tension of thespring and limiting the movement of the tool.

The combination in a sawing machine, of a separating-device consisting of a substantially simitar-shaped etlge tool having its curved edge arranged at an acute angleto the stock with its pointed end" in position to adapt it to easily enter the kerf made by the saws; said toolhaving an enlarged round shank slidably lit-ted in a tubularhousing' on a supporting bracket and secured to the forward end of a non-rotatable and longitudinally slidable rod carried by said bracket and arranged at an angle to the path of movement of the stock through the machine; said shank having a groove therein extending longitudinally thereof, and a pin screwed into a threaded aperture in the top of said housing so as to enter said groove. and prevent rotation of the tool while permitting longitudinal movement thereof, a spring acting on said rod for yieldingly forcing the tool into the kerf, and means for varying the tension of the spring.

l. In combination with a sawing machine having guide-bars between which the stock is moved into position to be acted upon by the saws, brackets of angular form each having on its upper end a tubular housing in which is slidably fitted the shank of an edge-tool having its curved edge arranged at an acute angle to the stock passing between said guide-bars with its pointed end in position to adapt it to easily enter the kerf under slight pressure, said housing being arranged at an angle to said guide-bars and having an arm projecting rearwardly therefrom in the direction of its axis and terminating in an inwardly turned end-portion or flange apertured in alinement with said axis, said shank having secured thereto a spring-pressed rod slidably fitted in said apertured flange, and means to prevent rotation of the rod while permitting longitudinal movement thereof.

5. The combination in a sawing machine having guide-bars between which the. mate rial to be cut is moved into position to be acted upon by the saws, each of said guide bars having an oblong slot therein, of an edge-tool protruding through each slot, and brackets of angular form secured at opposite sides of said guidebars, each having an intermediate horizontally disposed body portion and vertically disposed end portions extending therefrom at substantially right an les thereto, the lower end portion being firmly secured to the machine frame, and the upoer end portion terminating in a tubular housing in which is slidably fitted the saws, a spring for yieldingly forcing the shank of one of said tools, said housing being arranged at an angle to said guide-bars and having an arm projecting rearwardly therefromin the direction of its axis and terminating "in an inwardly turned end-portion or flange apertured in alinement with said axis, spring-pressed rods each having oneendsecured to the shank of a tool and the other end thereof slidably fitted in one of'said apertured flanges, and means to prevent rotation of the rod and tool while-permittinglongitudinal movement thereof.

6. The combination in a sawing machine having guide bar-s thereon between which the material to be cut is moved into position to be acted upon by the saws, of a. pair of edge-tools each protruding through an oblong slot in one of said guide-bars, and brackets of angular form supporting said tools on opposite sides of said guide-bars; each bracket having an intermediate horizontally disposed body portion and vertically disposed end portions extending therefrom at substantially right angles thereto, the lower end portion thereof being firmly secured to a cross-beam on the machine frame, the upper end portion of each brack et terminating in a tubular housing arranged at an angle to said guide-bars and having an arm projecting rearwardly therefrom in the direction of its axis and terminating in an inwardly turned end-portion or flange apertured in alinement with said axis, the shanks of said tools being slidably fitted in said housings, spring-pressed rods each having one end secured to the shank of a tool and the other end thereof slidably fitted in one of said apertured flanges, and means to prevent rotation of the rod and tool while permitting longitudinal movement thereof.

7. A yieldable separating device of the character described comprising tool-supporting brackets having their lower ends secured to the machine frame on opposite sides of guide-bars between which the material passes through the machine in position to be acted upon by the saws, said brackets having their upper ends offset from their lower ends and formed with integral tubular housings arranged at an angle tosaid guide-bars, said housings each having an arm projecting therefrom in the direction of its axis and terminating in an inwardly turned endportion or flange apertured in alinement with said axis, and an edge-tool slidably secured in each housing and protruding through an oblong slot in one of said guide-bars, said tools being secured on the ends of spring-pressed rods having their other ends yieldingly slidably fitted in said apertured flanges, and means to prevent rotation of said rods and tools while permitting longitudinal movement thereof.

8. In a sawing machine the combination with a main supporting frame having parallcl guide-bars thereon; said bars having blong slots therein, of separating devices whereby the pieces of material cut by the saws are forced apart sufiiciently to prevent them from binding the saws therebetvveen; said devices comprising a pair of substantially simitar-shaped edge-tools slidably supported on opposite sides of said guide-bars and projecting through said slots into the path of movement of the material through the machine into position to enter the kerf made by the saws, said tools being secured to horizontally slidable rods carried by the edge-tool supports and arranged at an angle to said path, and means acting on said rods for yieldingly forcing said tools into the kerf.

9. In a sawing machine the combination With a main supporting frame having guidebars thereon provided With oblong slots in the sides thereof, means for slightly forcing apart the pieces of material cutby the saws; said means comprising a pair of substantially simitar-shaped edge-tools mounted on brackets secured on opposite sides of said guide-bars, each bracket having on its upper end a housing in Which is slidably fitted the shank of a tool Which projects into the path of movement of the material through the machine, said shanks being secured to rods slidably supported in apertured flanges on the free ends of arms springing from said housings, and means acting on said rods for 'yi-eldingly forcing said tools into the kerf made by the saws.

In testimony whereof I aflix my signature.

JOSEPH A. NEAL. 

